3,5-Dimethyl-1H-pyrazole-1-carboxamidine mononitrate → HCID 178512768, compound

Participants

Reaction Steps

An ethanol (5 ml) solution of 3-iodo-4-aminobenzylamine (0.220 g, 0.887 mmol) and 3,5-dimethylpyrazole-1-carboxamidine nitrate (0.179 g, 0.087 mmol) was heated at reflux temperature for 3 hr. under argon. The solvent was evaporated in vacuo and the residue washed with ether and dichloromethane to remove 3,5-dimethylpyrazole and unreacted amine. The crude product was recrystallized from methanol/ether to give fine, pale-yellow needles (0.163 g, 72.5%), mp 135°-137° C.; PMR (DMSO-d6) γ6.62-7.66 (m, 9H), 4.1 (s, 2H); IR (Nujol) 1660, 1620 cm-1 (C=N); Anal. Calcd. for C18H11IN4. HNO3.0.5H2O): C, 27.20; H, 3.42, N, 19.08. Found C, 26.70; H, 3.33; N, 19.08.

Provenance & Evidence